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INVENTORIES (Schedule of Inventory) (Details) - USD ($)
$ in Thousands
Dec. 31, 2016
Dec. 31, 2015
Inventory Disclosure [Abstract]    
Raw materials, parts and supplies $ 6,461 $ 7,084
Work in process 6,541 7,471
Finished products 8,467 10,803
Inventory, Net $ 21,469 $ 25,358